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Synthesis, structural and electrical properties of [C2H10N2][(SnCl(NCS)2]2

Authors
Journal
Journal of Solid State Chemistry
0022-4596
Publisher
Elsevier
Volume
197
Identifiers
DOI: 10.1016/j.jssc.2012.08.040
Keywords
  • Sn(Ii) Halide And Pseudo Halide
  • Structure
  • Indirect Spin-Spin Coupling
  • Dielectric Properties
  • Electrical Conductivity
Disciplines
  • Physics

Abstract

Abstract Synthesis, structural and electrical properties are given for a new organic stannous pseudo halide material. The structure of the [C2H10N2][(SnCl(NCS)2]2 reveals that the adjacent Sn(II) centres are bridged by a pair of SCN− anions to form à 1-D array giving rise to the anionic chains (SnCl(NCS)2)nn−. These chains are themselves interconnected by means of N–H…Cl(S) hydrogen bonds originating from the organic cation [(NH3)2(CH2)2]2+. The AC impedance measurements were performed as a function of both frequency and temperature. The electrical conduction and dielectric relaxation have been studied. The activation energy associated with the electrical relaxation determined from the electric modulus spectra was found close to that of the activation energy obtained for DC conductivity. The conduction mechanisms are attributed to the quantum mechanical tunneling model in phase I and to the proton hopping among hydrogen vacancies in phase II.

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